Question

Use the slope and y-intercept, if possible, to graph the line
whose equation is given.

y=2x-1

Answer 1

well thats easy. you use y= mx + b your 2x is your m and your b is -1

Answer 2

Meaining? I am confused on this.

Answer 3

the eq. y= 2x -1 is in the slope-intercept form (y=mx +b)
the coeff of x is the slope or the rate at which a line is going up or coming down, reading the graph from right to left.

so the slope of this equation/line is 2 or more precisely 2 units of y for every one (1) unit of x. you usually hear it as y/x or rise/run.

the -1 is the y intercept that is the point at which the equation's line will cross the y axis. so the line is going to go throughh -1 on the y axis,

so now find some data points for this eq,. make table x y
let x=0 0 what is y?
1 "
plug it into the eq. y=2x-1............................y=-1
so you have one point
now let x=1 what is y now?...................y=1 now you another point.......and you can draw thr line of the eq. the line ought to pass thru y, -1 if it doesn't something is wrong.